Hi try this
I've named the sheet that you want to Copy as "Master" added a Button "Admin"
Added a New Sheet called Admin and added two buttons and assigned Macros to them
Button1. Amend "Master" Sheet password "lemonade"
Button2. Amend "Fields" Sheet password "lemonade
In the VBA editor, find the "ThisWorkbook" object and dbl click. You will get a window titled "bookName - ThisWorkbook". In the left dropdown select workbook and you should get a workbook open event procedure.
Try this and see if it does what you want.
I also added to Modules in the VBA
Module1
Module2
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